android 获取控件大小和设置调整控件的位置XY

网上很多人对设置控件的位置都使用 view.setPadding(left, top, right, bottom) ，其实这玩意很差劲，它是设置自己本身位置的偏移，我们很少需要这种效果，我需要的设置控件相对屏幕左上角的X 、Y位置。众里寻他千百度，蓦然回首，那人却在灯火阑珊处！

[java] view
plaincopy

import android.view.View;

import android.view.ViewGroup.MarginLayoutParams;

import android.widget.RelativeLayout;

/*

* 获取、设置控件信息

*/

public class WidgetController {

/*

* 获取控件宽

*/

public static int getWidth(View view)

{

int w = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);

int h = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);

view.measure(w, h);

return (view.getMeasuredWidth());

}

/*

* 获取控件高

*/

public static int getHeight(View view)

{

int w = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);

int h = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);

view.measure(w, h);

return (view.getMeasuredHeight());

}

/*

* 设置控件所在的位置X，并且不改变宽高，

* X为绝对位置，此时Y可能归0

*/

public static void setLayoutX(View view,int x)

{

MarginLayoutParams margin=new MarginLayoutParams(view.getLayoutParams());

margin.setMargins(x,margin.topMargin, x+margin.width, margin.bottomMargin);

RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(margin);

view.setLayoutParams(layoutParams);

}

/*

* 设置控件所在的位置Y，并且不改变宽高，

* Y为绝对位置，此时X可能归0

*/

public static void setLayoutY(View view,int y)

{

MarginLayoutParams margin=new MarginLayoutParams(view.getLayoutParams());

margin.setMargins(margin.leftMargin,y, margin.rightMargin, y+margin.height);

RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(margin);

view.setLayoutParams(layoutParams);

}

/*

* 设置控件所在的位置YY，并且不改变宽高，

* XY为绝对位置

*/

public static void setLayout(View view,int x,int y)

{

MarginLayoutParams margin=new MarginLayoutParams(view.getLayoutParams());

margin.setMargins(x,y, x+margin.width, y+margin.height);

RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(margin);

view.setLayoutParams(layoutParams);

}

}